Unauthorized Immigration/Irregular Migration

Explore all research, analysis, commentary, and data on unauthorized immigrants and irregular migrants, terms used in different parts of the world to describe the individuals who lack the right to reside legally in their country of destination, as well as the policies and enforcement practices affecting them.

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Immigration Enforcement Spending Since IRCA

U.S. immigration enforcement spending more than quadrupled between 1985 (the year before the Immigration Reform and Control Act was passed) and 2002, with 60 percent aimed at the border.